/*
 *    Copyright (c) 2006 ThoughtWorks, Inc.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package com.thoughtworks.turtlemock.internal;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class Behaviour {
    private List values = new ArrayList();
    private Map defaultReturnValueMap = new HashMap();

    public void add(ReturnValue returnValue) {
        values.add(returnValue);
        defaultReturnValueMap.put(returnValue.getOperationName(), returnValue);
    }

    Object getReturnValue(String operationName, Object[] params) throws ExpectedException {
        ReturnValue first = findFirst(operationName);
        if (first == null) {
            ReturnValue value = (ReturnValue) defaultReturnValueMap.get(operationName);
            if (value != null) {
                return value.getValueWithoutException();
            }
            return null;
        }
        values.remove(first);
        return first.getExpected(params);
    }

    private ReturnValue findFirst(String operationName) {
        for (int i = 0; i < values.size(); i++) {
            ReturnValue returnValue = (ReturnValue) values.get(i);
            if (returnValue.getOperationName().equals(operationName)) {
                return returnValue;
            }
        }
        return null;
    }
}
